V. Human Character

Who has not noticed that a man who devotes himself for a decade to knowledge of a really deep kind—knowledge that does not remain grey learning but is transformed into pleasure and pain, happiness and sorrow, thus becoming real knowledge and uniting itself with the Ego—who has not noticed that such a man's physiognomy, his gestures, his entire behaviour have changed, showing how the working of the Ego has penetrated right into his external physique!